Home / 21,250.71-29,325.96-11,821.11

Finding the Fourth Proportional to 21,250.71, 29,325.96 and 11,821.11

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Solution

The fourth proportional to 21,250.71, 29,325.96 and 11,821.11 is: 16,313.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.71 : 29,325.96 = 11,821.11 : x
  2. Step 2: Convert to fraction form
    21,250.71/29,325.96 = 11,821.11/x
  3. Step 3: Cross multiply
    21,250.71x = 29,325.96 × 11,821.11
  4. Step 4: Simplify right side
    21,250.71x = 346,665,399.02
  5. Step 5: Solve for x
    x = 346,665,399.02/21,250.71
  6. Step 6: Final answer
    x = 16,313.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.